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Before the introduction of transmission synchronizers in 1927, [2] double clutching was a technique required to prevent damage to an automobile's gearing during shifts. Due to the difficulty and most often unnecessary redundancy involved in the technique, coupled with the advent of synchronized gearing systems, it has largely fallen into disuse in light vehicles.
A dual-clutch transmission (DCT) (sometimes referred to as a twin-clutch transmission) is a type of multi-speed vehicle transmission system, that uses two separate clutches for odd and even gear sets. [1] The design is often similar to two separate manual transmissions with their respective clutches contained within one housing, and working as ...
Double-clutching: releasing the clutch in neutral to synchronize the speeds of the shafts within the transmission [7] Float shifting: shifting without using the clutch; In big rigs and semi-trucks, the driver may have to complete 24 or more gear changes when accelerating from a standstill to 70 mph (110 km/h).
Float shifting can reduce clutch wear because it is used so much less (only for starting from a standstill). Conversely, improper engagement of a gear (when the engine and transmission speeds aren't matched) can cause wear on the synchros and lockouts, and damage the gears by physically grinding them together due to a difference in speed.
The Ferrari 296 (Type F171) [4] is a sports car built since 2022 by the Italian company Ferrari. The 296 is a two-seater, offered as a GTB coupe and a GTS folding hard-top convertible . It is a plug-in hybrid with a rear mid-engine, rear-wheel-drive layout and its powertrain combines a twin-turbocharged 120-degree bank angle V6, with an ...
Double clutch, a baseball term for a fielder drawing his arm back twice before throwing; Double clutch (technique), a method of driving that involves pressing and releasing the clutch twice per shift; Double-clutch transmission, a type of transmission that has two separate clutches; Double-clutching (zoology), when an oviparous animal lays two ...
Instead of a torque converter, it uses a compact wet startup clutch to launch the car from a stop and also supports computer-controlled double-clutching. The MCT (Multi-Clutch Technology) acronym refers to a planetary (automatic) transmission's multiple clutches and bands for each gear. [7]
The MCT transmission is essentially the 9G-Tronic with a start-off wet clutch (NAK for German Nass-Anfahrkupplung) replacing the torque converter. This saves weight and optimises the response to the accelerator pedal input. It is a computer-controlled double-clutching. [11] The MCT acronym refers to this multiple-plate clutch.